Telephone conferencing device



FIG. 1 s a top perspective view of a telephone conferencing device showing our new design;

FIG. 2 is a rear elevation thereof;

FIG. 3 is a front elevation thereof;

FIG. 4 is a side elevation thereof; and,

FIG. 5 is a side elevation of the side opposite that shown in FIG. 4.

The broken line showing of environment in the figure drawings is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a telephone conferencing device, as shown and described. 